070199e877
* Minimize duplicate checking of VMs This commit updates check_pool pending, running and ready methods to greatly reduce instances in which the VM object is retrieved. Without this change get_vm is run for each of these check_pool steps even though the VM is already validated as being in inventory being running the check. This is left for checking running VMs when the VM is no longer ready. Without this change there is an unnecessarily large volume of VM object checks. * Make hostname mismatch checking optional This commit makes hostname mismatch checking optional on a pool and global config level. The default behavior of checking this is preserved. When disabled _check_ready_vm will not run get_vm, which allows for ready VMs to be checked without retrieving an object from vsphere and waiting for a free provider connection. Without this change it is not possible to disable VM object retrieval in _check_vm_ready. * Check if a hostname return is empty string This commit checks whether a hostname returned is an empty string. Without this change a VM that returns a hostname with a empty string will report as having a hostname mismatch, which may happen before all VM data is updated. * Only check hostname for mismatch after time since ready has past Configure hostname checking so it is not checked until a VM has been ready for greater than one minute. Without this change hostname checking will often fail because the configured value has not propogated to the VM on some platforms before this check is run. |
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| docs | ||
| examples | ||
| lib | ||
| scripts | ||
| spec | ||
| .gitignore | ||
| .rubocop.yml | ||
| .rubocop_todo.yml | ||
| .travis.yml | ||
| Dockerfile | ||
| Dockerfile-aio | ||
| Gemfile | ||
| LICENSE | ||
| Rakefile | ||
| README.md | ||
| Vagrantfile | ||
| vmpooler | ||
| vmpooler.gemspec | ||
| vmpooler.yaml.dummy-example | ||
| vmpooler.yaml.example | ||
vmpooler
vmpooler provides configurable 'pools' of instantly-available (running) virtual machines.
Usage
At Puppet, Inc. we run acceptance tests on thousands of disposable VMs every day. Dynamic cloning of VM templates initially worked fine for this, but added several seconds to each test run and was unable to account for failed clone tasks. By pushing these operations to a backend service, we were able to both speed up tests and eliminate test failures due to underlying infrastructure failures.
Installation
Prerequisites
vmpooler requires the following Ruby gems be installed:
It also requires that a Redis server exists somewhere, as this is the datastore used for vmpooler's inventory and queueing services.
Configuration
The following YAML configuration sets up two pools, debian-7-i386 and debian-7-x86_64, which contain 5 running VMs each:
---
:providers:
:vsphere:
server: 'vsphere.company.com'
username: 'vmpooler'
password: 'swimsw1msw!m'
:redis:
server: 'redis.company.com'
:config:
logfile: '/var/log/vmpooler.log'
:pools:
- name: 'debian-7-i386'
template: 'Templates/debian-7-i386'
folder: 'Pooled VMs/debian-7-i386'
pool: 'Pooled VMs/debian-7-i386'
datastore: 'vmstorage'
size: 5
provider: vsphere
- name: 'debian-7-x86_64'
template: 'Templates/debian-7-x86_64'
folder: 'Pooled VMs/debian-7-x86_64'
pool: 'Pooled VMs/debian-7-x86_64'
datastore: 'vmstorage'
size: 5
provider: vsphere
See the provided YAML configuration example, vmpooler.yaml.example, for additional configuration options and parameters or for supporting multiple providers.
Running via Docker
A Dockerfile is included in this repository to allow running vmpooler inside a Docker container. A vmpooler.yaml configuration file can be embedded in the current working directory, or specified inline in a VMPOOLER_CONFIG environment variable. To build and run:
docker build -t vmpooler . && docker run -e VMPOOLER_CONFIG -p 80:4567 -it vmpooler
Running Docker inside Vagrant
A Vagrantfile is also included in this repository so that you dont have to run Docker on your local computer. To use it run:
vagrant up
vagrant ssh
docker run -p 8080:4567 -v /vagrant/vmpooler.yaml.example:/var/lib/vmpooler/vmpooler.yaml -it --rm --name pooler vmpooler
To run vmpooler with the example dummy provider you can replace the above docker command with this:
docker run -e VMPOOLER_DEBUG=true -p 8080:4567 -v /vagrant/vmpooler.yaml.dummy-example:/var/lib/vmpooler/vmpooler.yaml -e VMPOOLER_LOG='/var/log/vmpooler/vmpooler.log' -it --rm --name pooler vmpooler
Either variation will allow you to access the dashboard from localhost:8080.
Running directly in Vagrant
You can also run vmpooler directly in the Vagrant box. To do so run this:
vagrant up
vagrant ssh
cd /vagrant
# Do this if using the dummy provider
export VMPOOLER_DEBUG=true
cp vmpooler.yaml.dummy-example vmpooler.yaml
# vmpooler needs a redis server.
sudo yum -y install redis
sudo systemctl start redis
# Optional: Choose your ruby version or use jruby
# ruby 2.4.x is used by default
rvm list
rvm use jruby-9.1.7.0
gem install bundler
bundle install
bundle exec ruby vmpooler
When run this way you can access vmpooler from your local computer via localhost:4567.
API and Dashboard
vmpooler provides an API and web front-end (dashboard) on port :4567. See the provided YAML configuration example, vmpooler.yaml.example, to specify an alternative port to listen on.
API
vmpooler provides a REST API for VM management. See the API documentation for more information.
Dashboard
A dashboard is provided to offer real-time statistics and historical graphs. It looks like this:
Graphite is required for historical data retrieval. See the provided YAML configuration example, vmpooler.yaml.example, for details.
Command-line Utility
- The vmpooler_client.py CLI utility provides easy access to the vmpooler service. The tool is cross-platform and written in Python.
- vmfloaty is a ruby based CLI tool and scripting library written in ruby.
Vagrant plugin
- vagrant-vmpooler Use Vagrant to create and manage your vmpooler instances.
Development and further documentation
For more information about setting up a development instance of vmpooler or other subjects, see the docs/ directory.
Build status
License
vmpooler is distributed under the Apache License, Version 2.0. See the LICENSE file for more details.